What is a better word for quietly?

The best "better" word depends on the specific context and nuance you're trying to convey. Here are some alternatives, with varying shades of meaning:

More neutral:

* Softly

* Gently

* Subtly

* Discreetly

* Unnoticeably

* Silently

* Hush-hush

* Under the radar

More specific:

* Sotto voce (whispering)

* In a hushed tone

* With a low voice

* Stealthily (moving quietly)

* Covertly (secretly)

More figurative:

* In a whisper

* As if on tiptoe

* Like a shadow

More negative:

* Furtively (secretively)

* Evilly

* Clandestinely

More positive:

* Peacefully

* Serenely

* Harmoniously

* Tranquilly

Example:

Instead of saying "He spoke quietly," you could say:

* "He spoke softly, barely a whisper." (More nuanced and specific)

* "He spoke with a hushed tone, as if sharing a secret." (More figurative and evocative)

* "He spoke furtively, avoiding eye contact." (More negative and suspicious)

Choose the word that best fits the tone and context of your writing.